Rock-crusher.



J. S. BARTLEY.

ROCK CRUSHER.

APPLICATION FILED 1AN.29.1917.

1l if?. l, Patented Jan. 2v2, 1918.

INVENTOR. J 5. 5A e TL@ y l @MM kJ'OSEl S.. BARTIEY, OF DENVER, COLORADO.

BooK-causaran. Y

nesniazg Specification of Letters Patent.

Patented J an. ,22, 1918;

Application led January 29, 1917. Serial No. 145,201.

TofaZZ whom t may concern:

Be it known that I, JOSEPH S. BAHTLEY, citizen of the United States, residing at Denver", inthe county of Denver and State of Colorado, haveinvented certain new and useful VImprovements, in Rock-Crushers, of which the following is a speciiication.

Tliisinvention relates to rock Crushers and more particularly to improvements in the plates or liners whose opposed faces are in direct Contact with the material during the crushing action.

It is the primary object of my invention to prevent chokingof the discharge opening of a Crusher by small piecesv of rock, and to thereby increase thev capacity of' the machine, reduce the energy required in its effective operation and insure 'the uniformity of its product.

With the above object in view, l provide the Crusher plates with one or more openings, preferably inthe form of up and downwardly extending slots, which connect with the" discharge opening of the machine and serve as passages for the immediate discharge of small pieces of rock produced by the crushing action, before' the mass reaches the opening through which the reduced product is ordinarily delivered.

An embodiment of my invention as applied to a so-called jaw Crusher, has been shown in the accompanying drawings in the various views of which like parts are similarly designated' and in which,

Figure 1 is a vertical section through a jaw Crusher of standard construction, to which myinvention has been applied,

Fig. 2, an enlarged vertical section through the stationary jaw of the Crusher shown in Fig. 1,

Fig. 3, a face view of said stationary jaw in connection with adjacent parts of the Inachine upon which it is mounted,

Fig. d, a view similar to that of Fig. 3, showing a modification of my invention, and

Fig. 5, an enlarged transverse section of the jaw taken either' along the line 5-5, Fig. 3, or the line 5ft-5a, Fig. il.

Referring more specifically to the drawings, the reference numeral 2 designates jaw-Crusher of standard construction, including a stationary jaw 3 and a movable jaw 4 which as usual has a crank connection with a driving shaft 5.

In the operation of the Crusher, the jaw a which at its lower end engages a toggle 6, moves in a substantially elliptical pathto and from the face of the stationary jaw; the material to be crushed is fed between the jaws at their upper ends at which they are widest apart, and the reduced product is discharged from the machine through the narrow passage 7 between the lower ends of `the jaws which remain at a substantially uniform distance apart during the crushing action.`

The jaws of the crusher carry upon their opposed faces, removably secured plates or liners 8 and 9 which directly engage the rock to be crushed and are usually made of chilled iron or other wear-resisting material.

In accordance with my invention asillustrated in the drawings, the plate 8 connectedwith a stationary jaw of the Crusher has a plurality of parallel slots 10 which extend up and downwardly between lines adjacent the upper and lower edges of the plate.

The bed plate' 12 of the jaw upon which the Crusher plate is secured, is provided with grooves 13 which register with the slots 10 and which extend through lthe lower edge of the bed plate to connect with the space into whichwthe product of the machine is discharged through the openings 7 between the lower ends of theA jaws.

The grooves in the bed plate are preferably widened toward their bottom surfaces to insure the unobstructed downward passage of material which enters the grooves through the respective slots in the liner.

It will be seen that during the crushing action produced by movement of the movable jaw toward the relatively immovable jaw, the particles of rock reduced to a size less than the widths of the slots, will immediately pass through the slots into the grooves of the bed plate, which conduct them to a point of discharge adjacent that at which the product of the crushing action is ordinarily delivered.

Choking of the narrow space at the lower ends of the jaws, which is a common occurrence in crushing machines of this type, is effectively. prevented inasmuch as only the larger pieces of rock remain in the crush` ing space while the parts reduced to the desired iineness pass immediately through the slots in the Crusher-plate of the stationary jaw, it being understood that to obtain the most satisfactory results, the slots should resides in the fact that the edges of the slotsV present teeth which bite into the material and in consequence aidV in the process ot reduction and oppose upwardshpping ot the larger pieces of rock, which is a common occurrence in the operation of Crushers of this type. v

It will be readily understood that many modifications of the construction shown in 'Figs l and 2 of the drawings are possible within the spirit of my invention.

The slots in the crusher plate may, for example, loe produced by forming the plate of a number of parallelly spaced members 14 which are separately secured upon the bed-plate of the jaw as illustrated in Fig. Li.

lt will furthermore be observed that my invention is not limited for use on the stationary jaw of the Crusher but that if so desired both jaws of the machine may be provided with slots land passages as hereinbefore described.

Moreover my invention is applicable to crushing machines of dilierent types, it being obvious without further illustration, that the concave or both the head and the concave of a rotary or gyratory crusher may he equipped with slots and discharge passages of the character of those shown in the drawing in connection with a jaw Crusher.

Havingl thus described my inventionV what I claim and desire to secure by Letters- Patent is:

1. A jaw for rock crushers comprising a Copies of this patent may be obtained for bed-plate having in its face, a groove which is open at the lower end thereof, and a faceplate removably secured upon the face of the bed plate andhavingan up and downwardly extending slot in register with said groove.

2. A jaw for rock Crushers comprising a bed-plate having in its face,l a plurality of grooves which are open at the lower end` thereof, and a face-plate removably secured.

upon the face of the bed-plate and having t up and downwardly extending slots which register with said grooves.

3. A jaw for rock Crushers comprising a bed-plate having in its face, a groove which is open at the lower end thereof, and a faceplateremovably secured upon the face of the bed plate and having a slot in register with said groove, said groove being wider ln testimony whereof I have atlixed myV signature in presence ot' two witnesses.

JOSEPH S. BARTLEY.

Witnesses:

G. J ROLLANDET, L. RHOADES.

ve cents each, by addressing the "Commissioner of Patents, Washington, I0. C. Y 

